Builder&#39;s bracket



1,608,036 R. w. ROBINSON BUILDER S BRACKET Nov. 23 1926.

Filed April 29, 1925 Even/07':

, ,Bwn a Ids/t jfah'naorz I Patented Nov. 23, 1926.

UNITED STATES ROBERT W. ROBINSON, OF WORCESTER, MASSACHUSETTS.

BUILDER S BRACKET.

Application filed April 29, 1925. Serial No. 26,817.

This invention relates to a folding bracket or support for attachment to a wall for holding planks or boards for workmen to stand on in performing building and repairing a operations. There are brackets of this kind on the market in which the parts are made of structural iron shapes and are adapted to fold up when not in use for convenience in transportation and storage.

The principal objects of this invention are to provide a bracket of this kind which will be just as strong as those on the market and in fact stronger, on account of an intermediate brace, which I provide and yet can be made of lighter material and willbe more compact and easier to handle and transport for that reason and will .be less expensive to manufacture. J

Other objects and advantages ofthe invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. 1 is a side view of a bracket constructed in accordance with this invention shown in operative position;

Fig. 2 is an end elevation .of the same, 7 Fig. 3 is a side view of the same bracket folded up; 7 i

Fig. 4 is a sectional view on of Fig. 1; Fig. 5 is a plan of one end'on an enlarged scale, and

Fig. 6 is a sectional view on the line 6-:6 of Fig. 3, enlarged. I This bracket. like those now on the market,

has a main platform bar 10 which is arthe line 1- 1 ranged to be horizontal in practice and strut 11 hinged to-it at a distance from its outer endand extending downwardly at an &0 angle of about to support it. This strut is connected with the bar 10 by a folding brace 12 consisting of two flat pieces pivoted together and having their opposite ends piv- V at the bottom comes right up: against the oted to the ends of the other pieces men- 45 tioned. The top of the bar 10 is perforated and a rod 13 having an end at right angles to its length extends through the same and through the building. The'rod 13 is screw threaded on the end and provided with a handle nut 15 for clamping it up against the wall.

These parts in some form or other are present in most of these brackets but in this case I make the bar 10' and the strut 11 of angle iron with their vertical walls pivoted together by a pivot rivet 16 so that when folded together their two vertical walls come close to each other and their two transverse walls extend outwardlyin what would be nearly parallel planes when the device is all folded together. The bar 10 is provided with an integral projection 17 at the outer end extending upwardly and formed by the horizontal part of the angle iron. When a channel iron has been used, it has been necessary to rivet on a piece at. this point for preventing the boards or planks slipping off the end. At the other end I provided a cross piece 18 also of angle iron fixedly riveted to :the top flange of the bar 10 by a rivet 19 and extending across the same with its vertical flange projecting down and said vertical flange having a perforation for the bolt 13. This vertical flange constitutes the end of the bracket and rests againstthe wall 1 1, thus providing a flat broad surface for as has been the case with those brackets in 'whiclr the end of the platform bar is brace'12 which is formed of. pieces of flat iron is pivoted to the two vertical walls of the angle irons 10 and 11 and .on the inner side of each as the device is view-ed in :Fig. 1. This is to provide. that when folded up, as shown in Fig. .3, one :of these parts folds in directly in contact with'thevertical wall or flange of the strut 11 and the other one has to give a little-to extend from the .outside of this member to the surface of the flange of the other angleiron 1O.v Thestrut 11 which, as stated; is in the form of an angle iron, is provided with 45 cuts at 20 and 21 to constitute its two (ends.

The one 20 at the top serves to limit its mothis purpose which will not .dig into the wall Y tion outwardly from the folded position and 1 forms a top surface on which the horizontal wall of the angleiron 10 rests.- The cut 21 1 7 wall of the building and is an improvement over the ordinary forms in which the iron is bentover on an angle. It avoids the wabbling and turning of the bracket against this point where it is not secured in position. These are both shown as cut at 15 but some other convenient angle can be used, but the cut'in both cases is directly through the horizontal and vertical flanges in a single plane.

An important feature of this invention consists in the provision of an extra brace 24. This is formed of a piece of fiat metal hinged to the vertical wall of the strut 11 at 25 and having a notch 26 just short of its opposite end. On the angle iron bar 10 is a rivet or bolt 27 having a head spaced from the vertical flange of this angle iron. I have shown this bolt as having a thumb nut 28 on the opposite side. This bolt is located permanently in position and when the thumb nut is used the strut 24; is brought over from the position shown in Fig. 3 as the device is unfolded to the rear of the bolt 27 and then brought forward so that the notch 26 receives the bolt under the head. Then, if desired, the thumb nut can be tightened up to secure the parts in position but in use there is no force to dislodge the strut and it is not always necessary to tighten it up.

The use of the device has been'described in connection with the above description of the construction. When it is not in use it is folded in the position shown in Fig. 3. The brace 24 is first swung to the right in Fig. 1 a little to loosen it from the bolt and then it is flexed enough to get it back over the head of the bolt and folded back into what is practically the interior of the strut 11. It rests against the inside of the vertical flange thereof where it takes up practically no room. Then the folding strut 12 is folded and onebar comes into the same plane as the brace 24 in contact with the flange of the angle iron 11, as shown in Fig. 3. The belt 25 limits the length of one of these two parts of the folding strut. The other partwhich is considerably shorter has to have little play so that it will not bind when brought into this position.

In this way the whole device is made out of angle iron and flat pieces. no channel irons being employed at all. A all folded against the vertical walls of the angle irons and the interior parts when folded are all locatedvery closev to those walls. They do not need any protection of .a side wall on wliat is the front side-in Fig.

a ard they are way back behind the edges of the horizontal flanges of the two angle irons 10 and 11. They will not catch on anything in transportation nor project so as to interfere with packing and storage. The brace 24 is very important because it gives additional strength where it is needed and in fact, enables me to make the whole thing of The partsv are lighter material than it has been made heretofore to secure the same results or to secure better results. if made of the same weight.

Although I have illustrated and described only a single form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the inveutionas expressed in the claims. Therefore I do not wish to be limited in these respects but what I do claim is 1.. In a builders bracket, the con'ibination of a platform bar of angle iron having a horizontal cross piece of angle iron secured to the top flange" of the platform bar and extending crossways thereof at the end and having its vertical flange extending downwardly to cover the end of the angle iron and afford contact with the wall to which the bracket is applied. a bolt secured through the top flange of said bar and passing through the vertical flange of said cross piece and through the wall of the building and having a nut thereon for holdi g it in position, a single strut extending down from a point at a distance from the outer end of the bracket and pivoted thereto. a pair of bars pivoted together and constitut ing a folding brace with one end pivoted to the vertical flange of the platform bar, and the other pivoted to the bottom of said strut, and a vertical brace pivoted to the strut and detachably connected with said platform bar. 7

2. In a builders brackettthe combination with a platform bar, a strut pivoted th e to, the bar and strut being pivotedtogether, a folding brace pivoted to both and consisting of two pieces pivoted together, one foldable di ectly in contact throughout its length with the first named brace, means for holding the bracket against a vertical wall an 7 additional brace pivoted to the strut and adapted to fold in contact with it throughout its length and having a notch in one side near the other end a bolt on the bar having a head between which and the bar the end of the strut is adapted to engage. withthe bolt extending through the notch. and means for tightening the bolt to hold this strut in position.

In testimony whereof I have hereunto a fixed my signature.

ROBERT W. Resinson. 

